Conversion of infrared grey-level image into temperature field by polynomial curve fitting

Terry Yuan-Fang Chen, Ming Hsuan Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A simple method to convert the infrared gray-level image into temperature field is developed by using least squares polynomial curve fitting. In this method, the correspondence between the infrared gray-level image and the associated temperature field for various emissivity values and temperature range is analyzed first. Then a second-order polynomial can be applied to fit the correspondence between the gray-level image and the associated temperature field as a function of emissivity. For multiple conversions of temperature ranges, the constants of the fitted polynomial in multiple ranges can be further fitted as a function of emissivity and temperature range. Test of the method on a cup of hot water was done. An average error less than 1% was achieved between the proposed method and the commercial ones.

Original languageEnglish
Title of host publicationNinth International Symposium on Precision Engineering Measurements and Instrumentation
EditorsXianfang Wen, Jiubin Tan
PublisherSPIE
ISBN (Electronic)9781628415612
DOIs
Publication statusPublished - 2015 Jan 1
Event9th International Symposium on Precision Engineering Measurements and Instrumentation, ISPEMI 2014 - Changsha, China
Duration: 2014 Aug 82014 Aug 10

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9446
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

Other9th International Symposium on Precision Engineering Measurements and Instrumentation, ISPEMI 2014
CountryChina
CityChangsha
Period14-08-0814-08-10

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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